A comparison between steroidal hormones in follicular fluids and histological change of the dominant and cystic follicles of local breeding cows.

Abstract

The cystic ovarian follicle are a serious cause of reproductive failure in cattle because theyoccur frequently and prolong the intervals from postpartum to first estrus and conception. Thepaired ovaries were collected from forty four slaughtered cow after examination by rectalpalpation to diagnosis of the cystic follicle stricter, the local breeding cow were primarily Al-Genobea , Al-Kradea and Al- Shrabea cow , the age of its cow are (4-6) years but thereproductive status were unknown.The cysts follicle fluids contain high significantly of oestradioland progesterone ( p <0·05) than the dominant follicle fluids.The histological characteristics ofthe dominant follicles (17-25 mm) are shown Small antral and have a granulosa cell layer andinternal theca cell layer, but the cystic follicles which presented the large granulose cell layer,which was basically a poly-layer .Aim of this studies are comparison of the estradiole (E2) &progesterone (P4) concentrations in the follicular fluids of the dominant follicles and cysticfollicles ,with studies of the histological change between the follicular walls.